async Task <double> GetOrderTotalForCategoryAsync(IEnumerable <Order> orders, Category category, int numberOfWeeks = 6, bool isOpen = false)
{
double total = 0;
var categoryProducts = await _DataClient.GetAllChildProductsAsync(category.Id);
DateTime dateEnd = DateTime.UtcNow;
DateTime dateStart = dateEnd.AddDays(-numberOfWeeks * 7);
IEnumerable <Order> results;
if (isOpen)
{
results = orders.Where(
order => order.IsOpen == isOpen &&
order.OrderDate >= dateStart &&
order.OrderDate <= dateEnd &&
categoryProducts.Any(product => product.Name.ToLower() == order.Item.ToLower()));
}
else
{
results = orders.Where(
order => order.IsOpen == isOpen &&
order.ClosedDate >= dateStart &&
order.ClosedDate <= dateEnd &&
categoryProducts.Any(product => product.Name.ToLower() == order.Item.ToLower()));
}
foreach (var order in results)
{
total += order.Price;
}
return(total);
}